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chapter 16 vocab

5 ATHENA ch 16 Scott Foresman 2008

light-year the distance light travels in one year
nebula a cloud of gas and dust in which new stars form
supernova a gigantic explosion that occurs near the end of the life of some stars
black hole a point in space that has such a strong force of gravity that nothing within a certain distance of it can escape
galaxy a huge system of stars, dust, and gas held together by gravity
constellation a group of stars that forms a pattern
Created by: bgagnon